Dental syringe



(No Model.)

W. 0. MIDDAUGH.

DENTAL SYRINGE. No. 552,192. Patented Dec. 31, 1895.

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UNTTED STATES PATE T OFFICE.

XVILLIAM CLAY MIDDAUGH, OF EASTON, PENNSYLVANIA.

DENTAL SYRINGE.

SPECIFICATION forming part of Letters Patent No. 552,192, dated December 31, 1895.

Application filed October 22, 1894.

To aZZ whom it may concern.-

Be it known that 1, WILLIAM CLAY MID- DAUGH, a citizen of the United States, residing at Easton, in the county of Northampton and State of Pennsylvania, have invented a new and useful Dental Abscess-Syringe, of which the following is a specification.

This invention relates to dental abscesssyringes; and it has for its object to provide a new and useful syringe of this character that can be easily and conveniently handled within the mouth of a patient for the purpose of reaching an abscess through the root of the tooth to introduce any suitable medicamentsuch as carbolic acid, hydrogen p'eroxide or the likeinto the affected part.

To this end, therefore, the main and primary object of the present invention is to overcome the difficulties attending the use of pistonsyringes for the same purpose, and at the same time to provide an instrument or syringe that can be placed quickly and readily at any angle Within the mouth of the patient to reach any tooth without obscuring the vision of the dentist while packing the packing material around the needle of the syringe.

Vith these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a dental abscess-syringe constructed in accordance with this inven-- tion. Fig. 2 is an enlarged detail sectional view of the portion of the syringe that is placed within the mouth of the patient.

Referring to the accompanying drawings, 1 designates a pear-shaped1nedicine-bulb that is adapted to hold the medicament to be injected into the diseased tooth, and said bulb is preferably made of suitable metal and of such a size as to be easily handled within the mouth of the patient for properly adjusting the syringe. The pear-shaped medicine-bulb 1 is provided at its small end with an attaching-neck 2, to which is removably threaded one end of the tubular syringe-needle 3, that is made of gold, platinum, or other suitable vflow of liquid out of the bulb 1, and said valve-nipple 5 is also adapted to have detachably connected thereto, as at '7, one end of an air-tube 8, the other end of which connectswith an ordinary compressible air-bulb 9, provided at the end opposite the tube 8 with the usual air-inlet valve 10.

In using the syringe either the needle 3 or the valve-nipple 5 is removed or disconnected from the bulb 1, and by means of a medicine-dropper or other means the medicament employed is introduced into the bulb 1, and in this operation it is at times necessary to fill the bulb 1 through the valve-neck 4, in order to fill the needle and entirely exclude the air from the bulb and needle, which is necessary in cases of blind abscesses. After the bulb is filled and the needle or valvenipple replaced, the bulb 1 with the attached needle is then carried into the mouth of the patient with the valved nipple 5 disposed toward theopening of the mouth, and the needle 3 is then inserted into the root-canal of the tooth as far as it will reach, and is packedaround tightly with gutta-percha or cotton. The tube 8 is then connected to the nipple 5, and by compressing the bulb 9 the medicine Will be forced into the root-canal and through the fistula.

Changes in the proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described the invention, What is claimed, and desired to be secured by Letters Patent, is

In a dental abscess syringe, a pear-shaped metallic bulb ofa size adapted to be manipulated inside the mouth of a patient and provided at its wide end and one side with an oifstanding Valve neck disposed at an obtuse In testimony that I claim the foregoing as angle to the length of the bulb, a tubular my own I have hereto affixed my signature in syringe needle deta-ehably connected to the the presence of two witnesses.

small end of the medicine bulb, and a c0n1- \V. CLAY MIDDAUGII. pressible air bulb having a tube connection \Vitnesses:

with said valve neck of the bulb, snbstan- CYRUS S. SOHLABAGH,

tially as set forth. L. R. SPANYENBERG. 

